Mounting evidence suggests that Latin American democracies are characterized by politics and societies becoming more divisive, confrontational, and polarized. This process, which we define here as the “new polarization” in Latin America, seems to weaken the ability of democratic institutions to manage and resolve social and political conflicts. Although recent scholarship suggests that polarization is integral to contemporary patterns of democratic “backsliding” seen in much of the world, this new polarization in the region has not yet received systematic scholarly attention. Aiming to address this gap in the literature, the different contributions in this special issue revise the conceptualization, measurement, and theory of a multidimensional phenomenon such as polarization, including both its ideological and affective dimensions, as well as perspectives at the elite and mass levels of analysis. Findings shed light on the phenomenon of polarization as both a dependent and an independent variable, contributing to comparative literature on polarization and its relationship to democratic governance.

Although populist figures are often thought to thrive during crises that allow them to ‘perform’ decisive leadership, the US experience under Donald Trump during the COVID-19 crisis demonstrates that the opposite may sometimes occur. Despite its scientific and medical prowess, the US suffered more coronavirus cases and deaths than any other country in the world during the first year of the pandemic, and this abysmal performance was largely attributable to a failure of government. Fixated on the pandemic's economic effects and its potential political fallout, the Trump administration's framing of the crisis tried to minimize the public health emergency, externalize blame through a focus on the Chinese scapegoat and accuse the media and Democrats of hyping the pandemic to undermine Trump's presidency. In responding to the pandemic, Trump and his allies cast doubt on scientific and medical expertise that called for more aggressive testing, mask wearing and social-distancing measures. Trump delegated responsibility for crisis management to subnational governments and the private sector, and he politicized their efforts to regulate social behaviour in the public interest, intensifying partisan polarization.

When and why do legislatures impeach presidents? We analyse six cases of attempted impeachment in Paraguay, Brazil and Peru to argue that intra-coalitional politics is central to impeachment outcomes. Presidents in Latin America often govern with multiparty, ideologically heterogeneous coalitions sustained by tenuous pacts. Coalitions are tested when crises, scandals or mass protests emerge, but presidents can withstand these threats if they tend to allies’ interests and maintain coalitions intact. Conversely, in the absence of major threats, presidents can be impeached if they fail to serve partners’ interests, inducing allies to support impeachment as acts of opportunism or self-preservation.